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|Vub| from exclusive semileptonic B--> rho decays

|Vub| from exclusive semileptonic B--> rho decays
|Vub| from exclusive semileptonic B--> rho decays
We use Omnes representations of the form factors V, A_1 and A_2 for exclusive semileptonic B--> rho decays, and apply them to combine experimental partial branching fraction information with theoretical calculations of the three form
factors to extract |Vub|.

We find a slightly lower result, |Vub|=(2.8 +- 0.2)x
10^{-3}, than the values extracted from exclusive semileptonic B-->pi decays and using all other inputs in CKM fits. The disagreement is greater when we compare to the result extracted from inclusive B -> X_u l nu decays
high energy physics, phenomenology
0370-2693
326-331
Flynn, Jonathan M.
d8e90963-ba56-415c-bbd4-496b7d91d343
Nakagawa, Yoshiyuki
cddf88e3-df7a-4ab6-a0dd-1f84236c7e35
Nieves, Juan
7d5cbd0b-f25d-44f0-be50-fdecb2e54bfe
Toki, Hiroshi
04b52828-ce22-40b6-b2cc-1cfbbb09972b
Flynn, Jonathan M.
d8e90963-ba56-415c-bbd4-496b7d91d343
Nakagawa, Yoshiyuki
cddf88e3-df7a-4ab6-a0dd-1f84236c7e35
Nieves, Juan
7d5cbd0b-f25d-44f0-be50-fdecb2e54bfe
Toki, Hiroshi
04b52828-ce22-40b6-b2cc-1cfbbb09972b

Flynn, Jonathan M., Nakagawa, Yoshiyuki, Nieves, Juan and Toki, Hiroshi (2008) |Vub| from exclusive semileptonic B--> rho decays. Physics Letters B, 675, 326-331. (doi:10.1016/j.physletb.2009.04.037).

Record type: Article

Abstract

We use Omnes representations of the form factors V, A_1 and A_2 for exclusive semileptonic B--> rho decays, and apply them to combine experimental partial branching fraction information with theoretical calculations of the three form
factors to extract |Vub|.

We find a slightly lower result, |Vub|=(2.8 +- 0.2)x
10^{-3}, than the values extracted from exclusive semileptonic B-->pi decays and using all other inputs in CKM fits. The disagreement is greater when we compare to the result extracted from inclusive B -> X_u l nu decays

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More information

Published date: 15 December 2008
Keywords: high energy physics, phenomenology

Identifiers

Local EPrints ID: 144007
URI: https://eprints.soton.ac.uk/id/eprint/144007
ISSN: 0370-2693
PURE UUID: 42e3f6f2-44fd-4d53-8be7-3ea2f9e2946d
ORCID for Jonathan M. Flynn: ORCID iD orcid.org/0000-0002-6280-1677

Catalogue record

Date deposited: 14 Apr 2010 13:59
Last modified: 20 Jul 2019 01:21

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Contributors

Author: Yoshiyuki Nakagawa
Author: Juan Nieves
Author: Hiroshi Toki

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